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Effect of La2O3 content on microstructure and properties of Al2O3/Cu Matrix composites
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    Abstract:

    Using La2O3 powder, Al powder, CuO powder as raw materials and pure copper as matrix, in-situ synthesis technology and near melting point casting method were used to prepare particle-reinforced Cu matrix composites.The effect of La2O3 on the microstructure and properties of Cu matrix composites prepared by Al-CuO system was studied. The results show that the addition of La2O3 can obtain nano-Al2O3 particles, which are dispersed in the Cu matrix, and the prepared material structure is more fine and uniform, and its electrical conductivity and wear performance are significantly improved. When added 0.6% wtLa2O3, the electrical conductivity of the composite reached 90.2% IACS, and the amount of wear reached a minimum. Compared with the absence of La2O3, the electrical conductivity increased by 10.1%,and the wear decreased by 36.6%.

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[Dang Cong, Liu Huimin, Feng Shan, Xinba Yaer, Wang Jun, Shi Zhiming. Effect of La2O3 content on microstructure and properties of Al2O3/Cu Matrix composites[J]. Rare Metal Materials and Engineering,2020,49(12):4341~4347.]
DOI:10.12442/j. issn.1002-185X.20191098

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History
  • Received:December 27,2019
  • Revised:March 05,2020
  • Adopted:March 05,2020
  • Online: January 13,2021
  • Published: